Whiplash cams

Kim
It's very hard to beat the stock 70-AVS or 71-TQ set-up,especially the TQ, in a stock or even slightly hotted up engine.
The 360,was born to make torque with a small cam. Anything you put in it is likely to give up some low-end torque.
I see only three solutions; more compression,a higher stall, or a bigger rear gear.
The rear gear will make the biggest difference, and probably is the cheapest; unless you have something other than the 8.75.Then the Tc will be cheapest.And depending on what you currently have,might make the most sense

I gotto say tho, that the 340 cam in a low compression 360 is a bad recipe for low-rpm torque. That cam specs out at 268/276/114/+4 The intake closes at 64ABDC if installed at 110 centerline. This takes your 8.4Scr 360 down to 6.77Dcr and cylinder pressure of about 128psi
This is about as lazy as it gets.
I'm thinking, this cam really wants a lot more stall at this compression ratio.
If most of your driving is at low speeds I would pull that cam out, and put the 2bbl cam back in or something like it.
The 2bbl cam was 252/260/112 I think. This will pump up your Dcr to 7.24 and pressure of 140psi. This will vastly improve your bottom end.
There are other cams, of course, but most will make less psi than this, unless you are willing to spend a lot of money on retro-fitting roller lifters, or installing a solid lifter cam, but that would then probably be a custom cam.
The 2bbl cam is about the cheapest solution.
I tell you what, maybe do a compression test, and see just how high your current cylinder pressure is.
I should also mention that a little bit of torque can be dialed in with a higher initial timing and faster curve. At 8.4Scr, your engine will probably accept quite a bit of timing before complaining.(especially with the small TQ). And you can also burn the cheap gas which I've been told has a faster burn; and that is why I burn nothing but 87E10. There is not a big reward in this tho.
It kindof depends on your current TC, and gears, as to how much and how fast, but I'm thinking 16/18 initial,34 power at 3200, and try to get the advance started quite early. If you have already done this, then your engine should be about as snappy as it can be.
If you get detonation between stall and 3200,either change your driving style(lol), slow down the secondaries,or slow down the rate of advance.
I thought that factory 340 cam was a 220* @050, making it a fairly fast rate of lift cam, and so hard to improve upon. I've never measured one. But; the talk here on the forum is that it is only a 210@ 050. If that be true, then you don't need to stick to the 360-2bbl cam. Then you can try a 252fast-rate from one of your favorite grinders. This will get you that same 7.24/140psi, with little to no power loss. But you will lose the lopey idle.
By far, the best solution is pump up the compression.That engine will come alive at 10.0 Scr. Using the 340 cam, it will make 8.00Dcr@160psi. That should cure you soggy bottom end; it should fry the tires.